Scoop for stoker furnaces and the like



April 3, 1951 J. E. ANNEN 2,547,846

SCOOP FOR STOKER FURNACES AND THE LIKE Filed May 7, 1947 .INVENTOR. cfamed Z'Z 427/720 Z QM AITOKNE).

Patented Apr. 3, 1951 UNITED STATES PATENT OFFICE SCOOP FOR STOKER FURNACES AND THE LIKE James E. Annen, Kalamazoo, Mich.

Application May 7, 1947, Serial No. 746,502

6 Claims. 1

This invention relates to improvements in a scoop for stoker furnaces and the like.

The main objects of this invention are:

First, to provide a scoop which is easily manipulated and highly ef ficient in the use of removal of fly .ash or light ash from stoker fed furnaces.

Second, to provide a scoop or implement of the character stated which has a Wide range of adjustment to meet varying conditions in the cleaning of furnaces.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which embodies the features of the invention is illustrated in the accompanying drawings, in which:

Fig. l is a fragmentary view in horizontal section of the fire pot of a stoker fed furnace showing my scoop in one position of adjustment for use in removing light or fly ash from the furnace.

Fig. 2 is a side elevation of the scoop of my invention, the handle being partially broken away.

Fig. 3 is a vertical section on a line corresponding to line 33 of Fig. 2, the handle being partially broken away.

In the accompanying drawing, l represents the fire pot of a stoker fed furnace, 2 the door thereof and 3 fly ash or light ash on top of the fuel bed. It is common for fiy ash or light ash to accumulate around the fire pot above the bed of coals and this accumulation falls into the fuel clogging the draft therethrough and frequently seriously affecting the combustion.

The scoop of my invention is especially designed and adapted, as I have illustrated in my embodiment, for the removal of this material. If not removed, another difliculty is that the accumulation on the Wall of the fire pot seriously reduces radiation by the cake or burn thereon so that considerable difficulty is experienced in removing it.

The scoop of my invention as illustrated is of rectangular section and comprises a bottom 4, side walls 5, rear wall 6 and top wall I. The bottom, side and rear walls are preferably formed of a single piece of sheet stock, the rear wall being provided with flanges 8 which overlap the side walls and is secured thereto by spot welding as is indicated at 9. The top 1 has downwardly projecting flanges l0 overlapping the outer sides of the side walls and secured thereto by the welds II. This results in 'a very rigid structure even when formed ofcomparatively light gauged stock and lightness is of advantage as it facilitates the manipulation of the scoop within the furnace. n

The bottom is substantially longer than the top and the front edges I: of the side walls are inclined upwardly from the front end of the bottom to the front end of the top. The top has a forward extension I3 desirably with a rounded edge, the shank l 4 of the handle l5 being secured to this extension by the rivet l6 Which constitutes a pivot for the handle. The shank of the handle is disposed at an angle of about 45 degrees to the handle and is preferably formed integrally therewith and in effect, is a flattened gear on the handle. The shank is frictionally secured to the extension l3 so that the handle is adjustably held in position. This enables the handle to be adjusted to the desired relation to the scoop or vice-versa with the result that the scoop may be positioned to most effectively scrape the walls of the fire pot and to pick up the ash. This adjustment can be effected while the scoop is within the fire pot by pressing the scoop against the wall of the fire pot or against the fuel bed.

I have illustrated and described my invention in an embodiment which I have found highly practical.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A scoop of rectangular section comprising bottom, side, rear and top walls disposed to provide an open forward end,'the bottom extending forwardly substantially beyond the top wall, the front edges of the side walls being inclined upwardly from the front end of the bottom to the front end of the top wall, the top wall having an extension with a forwardly curved edge, and a handle having an angularly disposed shank superimposed on and pivotally secured to said extension centrally thereof by a vertically disposed piVOt connectingthe scoop to the handle forswinging adjustment on the pivot with the handle shank having a frictional adjustment retaining engagement with the scoop, said vertical pivot being disposed forwardly of the central portion of the scoop to facilitate the open end of the scoop facing forwardly when filling the scoop by a forward pull on the handle.

2. A scoop comprising bottom, side, rear and top walls disposed to provide an open forward end, the bottom extending forwardly substantially beyond the top wall and the front edges of the side walls being inclined forwardly from 3 the front end of the bottom to the top wall, and a handle having an angularly disposed shank pivotally secured to the top wall of the scoop adjacent its front edge, the axis of the pivot extending downwardly and being disposed forwardly of the central portion of the scoop to facilitate the open end of the scoop facing forwardly when scooping into the scoop by a forward pull on the handle, the connection being such as to adjustably retain the scoop in its adjusted position relative to the handle.

3. A scoop comprising bottom, side, rear and top walls disposed to provide an open forward end, the bottom extending forwardly substantially beyond the top wall and the front edges of the side walls being inclined forwardly from the front end of the bottom to the top wall, and a handle having an angularly disposed shank pivotally secured to the top wall of the scoop, the axis of the pivot extending-downwardly and being disposed forwardly of the central portion of the scoop to facilitate the open end of the scoop facing forwardly when the scoop is being filled by a forward pull on the handle.

4. A scoop comprising bottom, side, rear and top walls disposed to provide an open forward end, the bottom extending forwardly substantially beyond the top wall, the edges of the side walls being inclined upwardly from the bottom to the top wall, and a handle adjustably secured to the top wall of the scoop to project upwardly and forwardly therefrom, the connection being under such friction as to yieldably hold the scoop and handle in their relative adjusted positions.

Cir

,5. A scoop comprising bottom, side, rear and top walls disposed to provide an open forward end, the bottom extending forwardly substantially beyond the top wall, the edges of the side walls being inclined upwardly from the bottom to the top wall, and a handle adjustably secured to the top wall of the scoop to project upwardly and forwardly therefrom.

6. A scoop comprising bottom, side and rear walls disposed to provide an open forward end. a handle projecting forwardly of the scoop, means for pivotally supporting the handle on the scoop in upwardly spaced relation from the bottom wall, the axis of the pivot extending downwardly and being disposed forwardly of the central portion of the scoop to facilitate the open end of the scoop facing forwardly when filling the scoop by a forward pull on the handle.

' JAMES E. ANNEN.

REFERENCES em The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 300,870 Immel June 24, 1884 2,221,219 Nelson -Nov. 12, 1940 2,473,647 Hulstedt June 21, 1949 FOREIGN PATENTS Number Country Date 190,935 Switzerland June 18, 1936 

